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kaweeel
Oily/Sensitive
I think it should follow the thinnest to thickest consistency as well. I'm no expert but summer fridays is supposed to work for mornings as it is a vitC serum and the olay retinol one should be for nighttime. As for all the others I think you can use them day and night. I personally don't recommend using all of them though, maybe try to use on different days?? But that's just me, they seemed pretty hydrating ones..
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Cedric
Oily/Resilient
general rule of thumb is thinnest -> thickest. only exceptions are exfoliants, which should go first, and retinol, which usually comes last
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